The dollar rose against the yen on Monday after the Bank of Japan followed last week’s interest rate cut with a warning that the health of Japan’s economy has deteriorated and is likely to get worse.

But investors’ equally dim view of the U.S. economy hurt the greenback against the euro, which rose broadly in holiday-thinned trade. Doubts about whether a U.S. automaker bailout would steer the economy out of recession also hit the dollar.

Traders said volumes were razor-thin in the lead-Up to the Christmas holidays, aggravating even the slightest moves in the currency markets. Still, many said demand for dollars remained low.

“The dollar view is so opaque at the moment, and the risk reward at this time of year is not worth it unless you really have to trade,” said Maurice Pomery, head of foreign exchange at IDEAglobal in London.

The dollar managed to rise above 90 yen for the first time in nearly a week after BoJ Governor Masaaki Shirakawa said yen strength and a global slowdown may force Japanese exports still lower even after a record plunge in November.

“All Asian exporters are at risk in this global economic slowdown, but Japan is at the top of the list,” said Dustin Reid, senior currency strategist at RBS Global Global Banking & Markets in Chicago. “The stronger yen has been playing havoc for Japanese exporters, and the auto companies in particular are likely to be significantly affected.”

So far this year, Japan’s currency is up nearly 20 percent against the dollar and more than 22 percent against the euro.

Early in New York, the dollar was changing hands at 89.85 yen , up 0.8 percent, after earlier rising to 90.23. The BoJ cut Japanese interest rates last week to near zero.

The euro also rose 1.3 percent to 125.79 yen after earlier hitting a session peak of $1.4123. Sterling fell 0.8 percent to $1.4814 , while the euro rose 1.1 percent to 94.35 pence , near a record high of 95.56 pence touched last week.

A move by China’s central bank to cut lending and deposit rates by 27 basis points — its fifth cut since September — shed more light on the scope of the global slump.

GRIM U.S. OUTLOOK

After coming under steady pressure in December, the dollar rallied on Friday after the Washington announced emergency loans for crippled General Motors and Chrysler.

But while the move averted a crisis for now, traders said uncertainty over the companies’ restructuring plans left many doubting the long-term effect it would have on the economy.

Last week, the Federal Reserve cut benchmark interest rates to near zero, underlining the severity of the economic crisis and undermining support for the dollar.

Investors are also looking for the European Central Bank to cut interest rates, currently at 2.5 percent, in January, though ECB executive board member Lorenzo Bini Smaghi warned about the risks of monetary policy being too lax, according to the Rome newspaper Il Messaggero.

Steven C. Johnson, Reuters 12/22/08